Public Health Commons^™

On The Removal Of The Open Earcanal High-Pass Filter Effect Due To Its Occlusion: A Bone-Conduction Occlusion Effect Theory, Kevin Carillo, Olivier Doutres, Franck Sgard

Études primaires

The occlusion effect is commonly experienced by in-ear device wearers as an increased loudness sensation of bone-conducted low frequency sounds. A widespread theory proposed by Tonndorf and based on a simplified electro-acoustic model describes the phenomenon as the removal of the open earcanal high-pass filter effect due to a perfect or partial occlusion. However, this filter has not been clearly defined and several ambiguities remain. Revisiting the model, a second order high-pass filter effect for the volume velocity transferred between the earcanal wall and the eardrum is highlighted. This filter remains for partial occlusion but vanishes for perfect occlusion. In …

Simulation Of The Objective Occlusion Effect Induced By Bone-Conducted Stimulation Using A Three-Dimensional Finite-Element Model Of A Human Head, Huiyang Xu, Franck Sgard, Kévin Carillo, Éric Wagnac, Jacques De Guise

Études primaires

The occlusion effect (OE) refers to the phenomenon that more bone-conducted physiological sounds are transmitted into the earcanal when it is blocked and may cause discomfort on users of hearing protection devices. Models have been proposed to study the OE as they can help understand the physical mechanisms and can be used to evaluate the individual contribution on the OE of the factors that may affect it (i.e., occlusion device, ear anatomy, and stimulation). The existing finite element models developed to study the OE are limited by their truncated ear geometries. In order to progress in the understanding of the …

Structural Remodeling Of The Lumbar Multifidus, Thoracolumbar Fascia And Lateral Abdominal Wall Perimuscular Connective Tissues: A Search For Its Potential Determinants, Christian Larivière, Sharon M. Henry, Richard Preuss

Études primaires

Recently remodeling of lumbar soft tissues has received increased research attention. However, the major determinants that influence remodeling need to be elucidated in order to understand the impact of different rehabilitation modalities on tissue remodeling. The main aim of this study was to explore the between-subject variance of different measures of lumbar soft tissues quantified with rehabilitative ultrasound imaging (RUSI). RUSI measures (n = 8) were collected from 30 subjects without and 34 patients with LBP: (1) lumbar multifidus (LM) echogenicity (fatty infiltration/fibrosis) at three vertebral levels (L3/L4, L4/L5 and L5/S1) (n = 3); (2) posterior layer thickness …

The Effect Of Extensible And Non-Extensible Lumbosacral Orthoses On Anticipatory Postural Adjustments In Participants With Low Back Pain And Healthy Controls, Christian Larivière, Richard Preuss

Études primaires

Background

Wearing a lumbosacral orthosis (LSO) is known to influence spine mechanics, but less is known about how LSOs affect motor control. Whether the use of a LSO can negatively affect motor control of the lumbar spine is still under debate.

Objective

The current study examined the immediate effects of two flexible LSOs (extensible and non-extensible) on the anticipatory postural adjustments that prepare the spine for a predictable perturbation.

Design

A comparative study using a repeated measures design in a laboratory setting.

Methods

Healthy controls (n = 20) and participants with low back pain (n = 40) performed a rapid …

An In-Depth Exploration Of Hospital-Based Physical And Occupational Therapists’ Needs, Perceptions And Participation In A Safe Patient Handling And Mobility Program, Kimeran W. Evans

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction - Patient mobility performed in the hospital setting places healthcare workers at high risk for WMSDs. The healthcare industry has responded through the creation of SPHM programs that are successful in reducing work-related injuries broadly. However, less is known about the distinct experiences of rehabilitation professionals. Therefore, an in depth exploration of the perceptions, participation, and needs pertaining to lift equipment usage among rehabilitation professionals was performed.

Methods – A qualitative case study approach explored this bounded system. Six focus groups were conducted with 25 members of the rehabilitation team and three interviews were conducted with key administrative personnel. …

Worker Health Inequities In Central America, Carlos Eduardo Siqueira

Gastón Institute Publications

No abstract provided.

Evaluating Compassion Satisfaction And The Risk Of Compassion Fatigue Among Those Working At Non-Human Primate Sanctuaries And Wildlife Centers, Madalyn Rantala

All Master's Theses

Compassion fatigue, an occupational risk commonly associated with caregiving professions, can have adverse effects for individual employee wellbeing, organizational productivity, and the quality of care that patients receive. Within animal-care worker samples, previous research suggests that around 25 percent of employees are at a high risk of developing compassion fatigue (i.e., experiencing burnout and secondary traumatic stress concurrently). To my knowledge, this thesis is the first study to explore compassion fatigue within the primate sanctuary field. Thirty-nine eligible participants completed an online survey that probed professional quality of life via the ProQOL 5, perceived workplace support via the Trauma-Informed Organizational …

Seaweeds Polysaccharides In Active Food Packaging: A Review Of Recent Progress, Carina Dietz, Shubham Sharma, Amit Jaiswal, Swarna Jaiswal

Articles

Background

Due to its short lifetime, food packaging leads to a rapid accumulation of plastic in our surroundings and thereby also has a huge impact on environmental pollution. To reduce these effects and create a more sustainable approach towards food packaging, biodegradable and biobased polymers have been developed and are emerging on the market.

Scope and approach

This review provides the current state of research regarding active packaging and the incorporation of seaweed into food packaging. Further, it summarises the resulting consequences of the seaweed incorporation on mechanical, physical, thermal, antioxidant, antimicrobial, and chemical properties, as well as the release …

Effect Of Hearing And Head Protection On The Localization Of Tonal And Broadband Reverse Alarms, Chantal Laroche, Christian Giguère, Véronique Vaillancourt, Claudia Marleau, Marie-France Cadieux, Karina Laprise-Girard, Emily Gula, Véronique Carroll, Manuelle Bibeau, Hugues Nélisse

Études primaires

Objective

This study explored the effects of hearing protection devices (HPDs) and head protection on the ability of normal-hearing individuals to localize reverse alarms in background noise.

Background

Among factors potentially contributing to accidents involving heavy vehicles, reverse alarms can be difficult to localize in space, leading to errors in identifying the source of danger. Previous studies have shown that traditional tonal alarms are more difficult to localize than broadband alarms. In addition, HPDs and safety helmets may further impair localization.

Method

Standing in the middle of an array of eight loudspeakers, participants with and without HPDs (passive and level-dependent) …

Structural Remodeling Of The Lumbar Multifidus, Thoracolumbar Fascia And Lateral Abdominal Wall Perimuscular Connective Tissues: Medium-Term Test-Retest Reliability Of Ultrasound Measures, Christian Larivière, Dany H. Gagnon, Richard Preuss

Études primaires

Abstract

Introduction

Growing interest is being paid to the lumbar multifidus (LM) intramuscular fatty infiltrations and fibrosis that are secondary to low back pain as well to the remodeling of perimuscular connective tissues (fasciae) such as the thoracolumbar fascia and fascia sheets separating the abdominalwall muscles. Magnetic resonanceimaging and computed tomography have traditionally been used but rehabilitative ultrasound imaging (RUSI) is much more affordable and practical, which can accelerate research and clinical applications on this topic. The aim of this study was to test the medium-term (8 weeks) test-retest reliability of the corresponding RUSI measures.

Methods

Thirty-four participants …

Role And Responsibilities Of Supervisors In The Sustainable Return To Work Of Workers Following A Work-Related Musculoskeletal Disorder, Iuliana Nastasia, Marie-France Coutu, Romain Rives, Jessica Dubé, Sarah Gaspard, Audrey Quilicot

Études primaires

Purpose Supervisors play an important role during the return to work (RTW) of injured workers. Yet little research has been done on the actions associated with this role or the contexts in which they are taken. The purpose of this study was to develop courses of action to promote supervisors’ involvement in the process aimed at achieving sustainable RTW for workers following a work-related musculoskeletal disorder (MSD), and to verify their pertinence, feasibility, and applicability in practice. Methods A two-phase qualitative method was used. (1) Secondary content analysis of 46 interviews of 14 workers post-MSD and 32 other actors in …

Toward A More Perma(Nent) Conceptualization Of Worker Well-Being? A Cross-Cultural Study Of The Workplace Perma Profiler, William P. Jimenez, Xiaoxiao Hu, Rebecca Garden, Xiaofei Xie

Psychology Faculty Publications

We examined the factor structure of the recently developed worker well-being measure the Workplace PERMA Profiler and relationships between PERMA dimensions (i.e., positive emotions, engagement, positive relationships, meaning, accomplishment) and job performance (viz., task performance, organizational citizenship behaviors benefiting individuals and the organization at large). The measure exhibited metric (i.e., weak) invariance across samples of participants from the U.S. (N = 284) and China (N = 420). Additionally, for participants who responded to both the Workplace PERMA Profiler and the performance measures, there was a general pattern of positive PERMA–performance relationships across both …

Conceptualization Of College Students' Covid-19 Related Mask-Wearing Behaviors Using The Multi-Theory Model Of Health Behavior Change, Robert E. Davis, Manoj Sharma, Kayla E. Simon, Amanda H. Wilkerson

Health, Human Performance and Recreation Faculty Publications and Presentations

Background: Recommendations and policies, regarding the use of face coverings, have been instituted to control transmission of coronavirus disease 2019 (COVID-19). Understanding of psychosocial factors related to the use of face coverings within the context of COVID-19 is needed. This study aimed to conceptualize mask-wearing behavior among students using the Multi-theory Model (MTM) of behavior change.

Methods: In October 2020, students (n = 595) enrolled in a large public southeastern US university were recruited to participate in a cross-sectional survey, using a valid and reliable instrument. Univariate, bivariate, and multivariate techniques described mask-wearing behavior and differentiated theoretical drivers of mask-wearing …

Quantification Of Bacterial Shedding From The Respiratory Tract Of Health Care Workers Wearing Paprs And Other Types Of Air-Purifying Respirators On Sterile Conditions In A Simulated Operating Rooms (Ors), Segun Olanrewaju Ajewole

Graduate Theses, Dissertations, and Problem Reports (ETD)

The role of powered air- purifying respirators (PAPRs) in healthcare settings during infectious diseases outbreaks and highly contagious pathogens (e.g., SARS, HINI, Ebola, COVID etc.) has attracted much interest based on the level of respiratory protection they provide and their many positive user features. A common practice among healthcare workers to minimize airborne contaminant exposure has been to use surgical masks or N95 filtering facepiece respirators (FFRs). Surgical masks have been shown to offer minimal respiratory protection and while N95 FFRs offer better respiratory protection, they are not comfortable to use for a prolonged period. With current PAPR designs, exhaled …

Aerosol Sampling Strategy: Effect Of Particle Transfer To Sampler Covers And Estimation Of Conversion Factors Between The United States And German Methods For Quartz Sampling, Godwin Akpevwe Erekaife

Graduate Theses, Dissertations, and Problem Reports (ETD)

ABSTRACT

AEROSOL SAMPLING STRATEGY: Effect of Particle Transfer to Sampler Covers and Estimation of Conversion Factors between the United States and German Methods for Quartz sampling

GODWIN A. EREKAIFE

In many countries, communities of experts, including industrial hygienists, have developed unique sampling strategies to determine workers’ exposure to aerosolized particles (e.g., metals, wood dust etc.). However, using different sampling and analytical methods for the same chemical often results in different exposure levels for a similar exposure group (SEG). The exposure discrepancies among different countries that are caused by using different measurement strategies are not always systematically defined. Therefore, this study …

Hands And Health: Quantifying Occupational Exposures And Implications Of Disability, Sueann R. Woods

Graduate Theses, Dissertations, and Problem Reports (ETD)

Introduction: Hand grip strength (HGS) has been negatively correlated with both biologic, cognitive, and mental health markers. Aim one investigated how occupational metabolic equivalents (OMETs), impacted HGS. Aim two investigated lost time from work and the association with HGS. Finally, aim three investigated the health outcomes of workers’ compensation claimants who have lost time from work, following diagnosis of CTS.

Results:HGS was positively associated with OMET (rs = 0.078, p = 0.009). Linear regression model demonstrated a statistically significant association between HGS and OMETs, F(1, 31) = 9.735, p = .001. Aim two found that all occupation groups had …

Professional Fishing Industry Fatality, Incident And Injury Data Project, Greg Penney, Bill Byrne, Marcus Cattani

Research outputs 2014 to 2021

Analysis of occupational injuries and fatalities within the wild-catch Australian Commercial Fishing Industry (ACFI) is complicated by fishing crew (masters, deckhands etc) classification as workers being dependent upon the applicable occupational health and safety, and worker’s compensation legislation of the relevant State or Territory. While fishing vessels are considered a workplace consistently across all State’s and Territories Work Health and Safety (WHS) / Occupational Health and Safety (OHS) jurisdiction’s legislation, the people who work on them may not be deemed to be workers or employees as per state and territory workers compensation legislation. The exclusion of fishing crew as workers …

Cold Storage Work And Cold Protective Gloves – A Review, Daena Charles

Theses

The rise of e-commerce and the increasing demand for online grocery shopping and delivery has prompted the growth of warehouse workers subjected to cold temperature working conditions. To ensure food safety and the preservation of inventory, majority of these e-grocery warehouses are cold storage with temperatures from 10°C to -23°C. Exposure to such cold working environments can have effects on the workers comfort, performance and health. As the demand for workers in cold temperature environments increases, it is important to understand how this environment affects the workers and the challenges it may present.

This review evaluates how working in cold …

Perceived Vulnerability To Covid-19 Infection From Event Attendance: Results From Louisiana, Usa, Two Weeks Preceding The National Emergency Declaration, Ran Li, Bingcheng Yang, Jerrod Penn, Bailey Houghtaling, Juan Chen, Witoon Prinyawiwatkul, Brian E. Roe, Danyi Qi

Faculty Publications

Background: Individual perceptions of personal and national threats posed by COVID-19 shaped initial response to the pandemic. The aim of this study was to investigate the changes in residents' awareness about COVID-19 and to characterize those who were more aware and responsive during the early stages of the pandemic in Louisiana.

Methods: In response to the mounting threat of COVID-19, we added questions to an ongoing food preference study held at Louisiana State University from March 3rd through March 12th, 2020. We asked how likely it was that the spread of the coronavirus will cause a national public health crisis …

Differences In Levels Of Prostate Specific Antigen And Insulin-Like Growth Factor 1 In Gstp1 Gene Polymorphism Among Workers, Nendyah Roestijawati, Yudhi Wibowo, Tri Lestari

National Journal of Occupational Health and Safety

Cadmium (Cd) is classified as a carcinogen in humans (IA). In addition to causing lung cancer, the incidence of prostate cancer due to Cd exposure based on epidemiological research has also increased. This study aims to identify the GSTP1 genotypic frequency distribution and its correlation with PSA and IGF-1 levels in Cd exposed and unexposed workers. The research design used was cross sectional in 23 exposed groups (weld workers) and 40 unexposed groups (office employees) with a total of 63 people. The measurement of PSA and IGF-1 levels was carried out using the ELISA method and identification of the GSTP1 …

Risk Analysis Of Job Stress Among Balinese Crew Of Cruise Ships, Made Adhyatma Prawira Natha Kusuma, Indri Hapsari Hapsari Susilowati

National Journal of Occupational Health and Safety

Job stress can appear in all fields of work. Job stress not only occurs from the environment at work but also can be caused by the psychological condition of the workers. Working on a cruise ship demands higher patience to serve the guests in various activities and handle complaints. Moreover, work on cruise ships causes the workers separated from their families for a long time period, which can increase their mental pressure. The aim of this research is to describe the job stress of workers at a cruise ship. This research was conducted in January-June 2017. In an attempt to …

Ability To Identify Occupational Health And Safety (Ohs) Hazards In Small Sized Enterprises Workers In Cimanggis District, Depok City, West Java, Samuel Peratenta Tarigan, Doni Hikmat Hikmat Ramdhan, Dion Zein Nuridzin, Fajar Nugraha, Heru Susetyo

National Journal of Occupational Health and Safety

Background: The high number of SMEs players in Depok has an impact on high employment. A large number of workers in SMEs that have not been maximized in applying safety and health aspects in the workplace has the risk of causing several problems such as minor injuries, ergonomic problems, old and insecure equipment, lack of workers' knowledge and poor work environment conditions. Objective: This study aims to assess the ability of workers to recognize OHS hazards in SMEs assisted by Cimanggis District Health Center, Depok City, West Java. Methods: This study used a cross-sectional design carried out on 36 SMEs …

Factors Affecting Safety Action In Job Pertamina-Medco E&P Tomori Sulawesi, Meddy Harjanto, Zulkifli Djunaidi

National Journal of Occupational Health and Safety

Increasing oil and gas production is one of the main concerns for companies engaged in oil and gas mining Human behavior related to safety is an approach to analyze what is needed to make the safe action more possible and reduce risky behavior. Therefore, research is conducted on the factors that influence safe behavior so that these factors can be more optimized. This research is a quantitative study with a cross-sectional design. The population in this study amounted to 291 people. Data retrieval is done randomly with a sample of 130 respondents conducted using the simple random sampling method. Bivariate …

Dysphagia And Masticatory Performance As A Mediator Of The Xerostomia To Quality Of Life Relation In The Older Population., Ting-Yu Lu, Jen-Hao Chen, Je-Kang Du, Ying-Chun Lin, Pei-Shan Ho, Chien-Hung Lee, Chih-Yang Hu, Hsiao-Ling Huang

School of Public Health Faculty Publications

Background: The impact of poor oral health on older adults' quality of life is a public health problem. In this study, the mediating effects of dental status, occlusal condition, dysphagia, and masticatory performance on the association between xerostomia and oral health-related quality of life (OHRQoL) were assessed in the older adult population.Methods: Stratified cluster sampling was used to recruit 1076 community-dwelling adults aged 65 years and older from Kaohsiung, Taiwan. Community care centers were randomly selected according to their geographic classifications (urban, rural, or mountainous areas). Assessments of dental status and occlusal condition were performed by dentists. Information on demographics, …

Inclusion Of Construction Occupational Health And Safety Management System (Ohsms) Components In Building Construction Project, Sarah Safira, Doni Hikmat Hikmat Ramdhan

National Journal of Occupational Health and Safety

Building construction projects are required to have the Occupational Health and Safety Management System (Sistem Manajemen Kesehatan dan Keselamatan Kerja, OHSMS) due to its high-risk nature. For this purpose, the Ministry of Public Works and People’s Housing of the Republic of Indonesia has issued the Circular Letter Number 66/SE/M/2015 on Costs for Implementing Construction Occupational Health and Safety Management System (OHSMS) in the Field of Public Works. The purpose of this study is to present a detailed description of OHSMS implementation in several building construction projects by using the Ministry’s Circular as the reference. This study is a descriptive study …

J Mich Dent Assoc December 2020

The Journal of the Michigan Dental Association

Every month, The Journal of the Michigan Dental Association brings news, information, and features about Michigan dentistry to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this issue, the reader will find the following original content:

• A cover story on “The Dentist’s Role in Recognizing Sleep-Related Breathing Disorders: A Two-Part Series”.
• The “2020 Author/Title Index to the Journal of the Michigan Dental Association”.
• News you need, Editorial and regular department articles on MDA Foundation activities, Dentistry and the Law, Staff Matters, and component news.

This issue also includes three articles reprinted …

Development Of A Web-Based Agriculture Health Risk Assessment Tool For Military Veteran Farmers And Ranchers, Alyssa Damke

Capstone Experience: Master of Public Health

In the U.S., significant health disparities exist among rural populations compared to their urban counterparts. These disparities can be compounded in agricultural workers due to the dangerous and unpredictable nature of their work. Agricultural producers who are also military Veterans may experience additional health pressures that are often overlooked in the healthcare setting. Over 2.5 million Veteran Health Administration (VHA) patients reside in rural areas and the healthcare infrastructure to care for these Veterans may not include an agricultural occupational approach. To address healthcare disparities in Veteran farmers and ranchers, this study, in collaboration with AgriSafe Network, will be used …

When Will The Covid-19 Pandemic In Indonesia End?, Dewi Susanna

Kesmas

On January 30, 2020, the World Health Organization(WHO) declared 2019-nCOV to be a Public Health Emergency of International Concern (PHEIC), due to the significant increase in confirmed new cases in various countries.1 In Indonesia, the first confirmed COVID-19 case was a female who had a closed contact with the 24th confirmed case in Malaysia and the second case was the mother of the first case.2 As time goes by, the number of new cases has increased significantly, reaching 160.165 confirmed cases with 6,944 deaths by August 27, 2020.3 The time when the COVID-19 pandemic in Indonesia will end is not …

Obesity Indicators And C-Reactive Protein In Indonesian Adults (More Than Equal To 40 Years Old): The Indonesian Family Life Survey 5, Yeni Mahwati, Dieta Nurrika

Kesmas

C-reactive protein (CRP) is the best clinical marker for systemic inflammation. Obesity is associated with increased CRP levels. Systemic inflammation is present before morbidity occurs. Research reveals that the identification of obesity indicators and CRP levels is limited among Indonesians. The present study investigated the associations between obesity indicators (body mass index [BMI], waist circumference [WC], waist-to-hip ratio [WHR], waist-to-height ratio [WHtR]) and CRP levels among Indonesian adults. This cross-sectional study based on Indonesian Family Life Survey-5 2014–2015 was conducted among 3,386 adults (≥ 40 years) living in 13 provinces in Indonesia during the study period. All data were collected …

Using The Reach, Effectiveness, Adoption, Implementation, Maintenance Framework In The Evaluation Of Community-Based Adolescent Care Pilot Program, Badra Al Aufa, Wahyu Sulistiadi, Mochamad Iqbal Nurmansyah, Agung T R Syiroj, Ibrahim Isa Koire

Kesmas

Posyandu Remaja (Posmaja) is a community-based adolescent care service in Indonesia that comprises a group of adolescents working as volunteers and healthcare workers under the guidance and responsibility of the Public Health Centre and City Health Office. The study aims to provide a formative evaluation program of Posmaja using the Reach, Effectiveness, Adoption, Implementation, and Maintenance (RE-AIM) framework. This research used a qualitative approach and took place in South Tangerang City, Indonesia. The data were collected from July until December 2018. Nineteen people participated in the study. The study used in-depth interviews and focus group discussions that adopted the RE-AIM …